Valve-gate



(No Model.)

F. H. RICHARDS.

VALVB GATE.

No. 467,955 Patented Feb. 2, 1892.

UNITED STATES PATENT OFFICE,

FRANOIS H. RICHARDS, OE HARTFORD, CONNECTIOUT, ASSIGNOR TO XVALTER VVOOD, OF PHILADELPHIA, PENNSYLVANIA.

'VALVE-GATE.

SPECIFICATION forming part of Letters Patent No. 467,955, dated February 2, 1892.

Application filed April 4, 1891. Serial No. 387,(575. (No modeli) To all whom it ntcy concern:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States, residing at llartford, in the county of Hartford and State of Oonnecticut, have invented certain new and useful Improvements in Valve-Gates, of which the following is a specification.

This invention relates to valve-gates for that class of valves which are used for water and steam, the object being to furnish an iron valVe-gate having a non-Corrosive seatring or face firmly fixed in place.

In the drawings accompanying and forming a part of this specification, Figure l is a plan View of a valve-gate made according to my present invention. Fig. 2 is a vertical section in line a a Fig. l. Fig. 3 is an enlarged sectional View similar to a part of Fig. 2 and is illustrative of the manner of calkingin the seat-ring. Fig. tis a view similar to Fig. 3, illustrating the eifect of the calking operation. Fig. 5 is a view similar to Figs. 3 and 4, showing a partial section of the valve-plate with the seat-ring removed. Fig. 6 is a section of the seat-ring, drawn on the scale of Figs. 3, et, and 5.

Similar characters designate like parts in all the figures.

The valve-gate (designated in a general way by B) comprises the plate 4: and the seatring 6, fixed to said plate. The plate 4 is usually made of cast-iron, while it is considered necessary to make the seat-ring of brass or like non-corrosive composition. Said ring consists, according to my improvements, of the seat-ring proper (designated by G) and the projecting looking rim or fiange S, from whose inner side projects inwardly the beveled calking-ring 10, whose upper side should be below the upper surface or face of the seat-ring, so that the calking operation will not distort said face. The lock-rim, including, its calking-ring, is widest on its lower side, so as to fit into the plate i after the nanner of dovetailing, substantially as-shown, the inner edge 7 of the calking-ring being beveled for that purpose.

The method of providing the valve-gate with the brass seat-ring is to first cast the seat-ring of suitable composition and then lay it in the mold for casting the plate 4, which is then cast over the lock-rim and the two parts removed from the mold locked together, as indicated in Fig. 2. At this time the seat-ring, for various reasons, including the well-known difierence in shrinkage of the dilferent metals, is imperfectly joined to the plate. To overcome this defect and make the joint perfectly firm and water-tight, the calking-tool T is set against the upper side or calking-face 5 of the calking-ring lO, and by this means said calking-ring s driven down or calked throughout the length thereof, thercby displacing the metal sidewise, as illustrated by the darker shading at 10, Fig. 4, to closely fill the groove 16, Fig. 5, containing the 1ock-rim, and thereby rigidly fixing the seat-ring to the plate. The seat-ring standing above the calking-ring, is not distorted by the calking operation, the calkiug effect (indicated by the darkened shading at 10, Fig. 4) being thns confined substantially to the space between the outer vertical surface lat and the inner nclined or undercut surface 12 (see Fig. 5) of the lock-rim groove 16. This feature is further provided for by naking the calking-face 5 inclined, as shown, and the forward edge thereof as low as or belowthe under surface 13 of the seat-ring. This Construction also facilitates the effective calking of the rim by permitting the calking-tool to be set inclined, as shown in Fig. 3, and thus to drive the metal away from the seat-ri ng G in the direction of said incline, which direction corresponds substantially with the angle of said undercut face 12 of the valve-plate 4.

The improved valve-gate sea-bring herein described is adapted to be made and sold as a separate article of manufactnre,since these rings are usually of brass and may be manufactured by the brass-foundryman and by him furnished to the manufacturers of the iron valves' The method herein described for making the brass-seated valve-gate constitutes the subject-matter of a separate application.

' llavin g thns described my invention, I claim- 1. The improved valve -gate herein described, consisting of the combination,with

IOO

the plate having a lock-rim g'oove undercut having the projecting lock-rim and having [O on the inner side thei-eci", of the seat-ring the beveled'calking portion on the nner side having a. projeeng lock-'rim fittingintosaid of the lock-rim and below the plane of the groove and having a beveled calking portion seat-ring face, substatially as described.

5 on the inner side of t-he look-rim and adapted to be calked independently of the seat-ring FRANCE RICHARDS' face, substantially as described. Witneses': e

2. The improved valve-gate seat--ingherein HENRY L. REOKARD,

described, consisting of the dsk-shaped ring H. MALLNER. 

